LAMMPS (18 Feb 2013)
# Big colloid particles and small LJ particles

units		lj
atom_style	sphere
dimension	2

lattice		sq 0.01
Lattice spacing in x,y,z = 10 10 10
region		box block 0 30 0 30 -0.5 0.5
create_box	2 box
Created orthogonal box = (0 0 -5) to (300 300 5)
  2 by 2 by 1 MPI processor grid
create_atoms	1 box
Created 900 atoms

set		group all type/fraction 2 0.96 23984
  861 settings made for type/fraction

set		type 1 mass 9
  39 settings made for mass
set		type 2 mass 1
  861 settings made for mass

velocity	all create 1.44 87287 loop geom

# multi neighbor and comm for efficiency

neighbor	1 multi
neigh_modify	delay 0
communicate	multi

# colloid potential

pair_style	colloid 12.5
pair_coeff	1 1  1.0 1.0 5.0 5.0 12.5
pair_coeff	1 2  5.0 1.0 5.0 0.0 7.0
pair_coeff	2 2 10.0 1.0 0.0 0.0 2.5

fix		1 all npt temp 2.0 2.0 1.0 iso 0.0 1.0 10.0 drag 1.0 	        mtk no pchain 0 tchain 1
fix		2 all enforce2d

#dump		1 all atom 1000 dump.colloid

#dump		1 all image 1000 image.*.jpg type type #		zoom 1.5 center d 0.5 0.5 0.5
#dump_modify	1 pad 5 adiam 1 5.0 adiam 2 1.5

thermo_style	custom step temp epair etotal press vol
thermo		1000

timestep	0.005

run		50000
Memory usage per processor = 2.8708 Mbytes
Step Temp E_pair TotEng Press Volume 
       0         1.44 -2.2136534e-06    1.4383978  0.014383923        90000 
    1000    1.9558819 -0.00044998322    1.9532587   0.01784589     99146.35 
    2000    2.0558568  0.011295331    2.0648679  0.021858185    96654.425 
    3000    2.1809647 0.0091754217    2.1877168  0.031294876     68756.47 
    4000    2.1960934 0.0028186107    2.1964719  0.049318667    42974.984 
    5000    2.1463273   0.01274853     2.156691   0.07399494    28660.577 
    6000    2.1073955 0.0076740311     2.112728  0.097657373     21544.21 
    7000    2.0843684 -0.001996932    2.0800555   0.11036967    17791.247 
    8000    2.0640518 0.0014998478    2.0632583    0.1290879    15498.836 
    9000    2.0466103  0.010705612    2.0550419   0.15352798    13893.115 
   10000    2.0318438  0.028356097    2.0579423   0.18270659    12603.157 
   11000    2.0483114  0.011317082    2.0573526   0.18793572    11521.407 
   12000    2.0465451  0.011178196    2.0554494   0.20917582    10593.908 
   13000    2.0339418  0.020973133     2.052655   0.22462811     9837.666 
   14000    2.0352875  0.021186021     2.054212   0.25973065    9169.0201 
   15000    2.0397627  0.016745562    2.0542419   0.26379715    8580.3575 
   16000    2.0306726  0.019939485    2.0483558   0.30415554    8135.4142 
   17000    2.0303715  0.023425678    2.0515413   0.29717285    7732.4398 
   18000    2.0091196  0.046353117    2.0532404    0.4201013    7321.9473 
   19000    2.0069004  0.044794224    2.0494648   0.37207191    7008.5252 
   20000    2.0293906   0.02286811    2.0500038   0.37743862    6770.2412 
   21000    2.0151565  0.035150252    2.0480677   0.42245372    6563.7655 
   22000    1.9931286  0.061233296    2.0521473   0.44215378    6387.0047 
   23000    2.0095257   0.04877004    2.0560629    0.4359382    6146.7894 
   24000    2.0244673  0.041537999    2.0637559   0.47433783    5904.2578 
   25000    2.0411374  0.014657985    2.0535275   0.42934196    5714.3163 
   26000    2.0101343  0.048931921    2.0568327   0.58433419    5557.1491 
   27000     2.010355  0.044833431    2.0529547   0.53172163     5441.607 
   28000    2.0075626  0.056527165    2.0618592   0.54811055    5312.0333 
   29000    2.0279913  0.036953425    2.0626914   0.53888357    5165.8026 
   30000    2.0014479  0.062210877    2.0614349   0.61283256    5028.4409 
   31000    2.0072038  0.060184255    2.0651578   0.62321627    4918.8388 
   32000    2.0250392  0.043276173    2.0660653   0.61454026    4822.6538 
   33000    2.0225382  0.041253335    2.0615443   0.61742775    4746.3484 
   34000    2.0079979  0.060100013    2.0658668    0.7196627    4668.3612 
   35000    1.9869444  0.081389753    2.0661264   0.69301002    4630.1772 
   36000    2.0080612  0.068966773    2.0747968   0.75807989    4524.4316 
   37000     2.016828  0.059785388    2.0743725   0.73797084    4436.8809 
   38000    1.9923438  0.084178865     2.074309   0.83179043    4358.5286 
   39000    2.0144256  0.058962222    2.0711496   0.72841391    4318.0019 
   40000    2.0205458  0.063834805    2.0821355   0.79611444    4233.3053 
   41000    1.9895557  0.088139599    2.0754847   0.77982219    4183.6801 
   42000    1.9862976  0.097665639    2.0817562    0.9527169    4136.6273 
   43000    1.9845679   0.10838021    2.0907431   0.84567001    4063.3971 
   44000    2.0058015  0.079068928    2.0826418   0.87879853    4013.8417 
   45000      2.01267  0.072607353     2.083041   0.84521964     3983.104 
   46000    2.0028119  0.088952749    2.0895393   0.86809738    3907.9426 
   47000    2.0219141  0.069213747    2.0888813   0.88288894     3868.029 
   48000    1.9820914    0.1111149     2.091004    1.0650645    3812.8502 
   49000    2.0161896  0.077389897    2.0913393   0.94940244    3771.6873 
   50000    2.0216994  0.071211384    2.0906645   0.99837694    3771.8545 
Loop time of 3.74849 on 4 procs for 50000 steps with 900 atoms

Pair  time (%) = 1.1053 (29.4865)
Neigh time (%) = 0.286503 (7.64317)
Comm  time (%) = 0.876681 (23.3876)
Outpt time (%) = 0.000933409 (0.0249009)
Other time (%) = 1.47907 (39.4578)

Nlocal:    225 ave 251 max 199 min
Histogram: 1 0 1 0 0 0 0 1 0 1
Nghost:    295.25 ave 304 max 283 min
Histogram: 1 0 0 0 0 1 0 1 0 1
Neighs:    1477.25 ave 1684 max 1286 min
Histogram: 1 0 1 0 0 0 1 0 0 1

Total # of neighbors = 5909
Ave neighs/atom = 6.56556
Neighbor list builds = 3138
Dangerous builds = 0
